When villagers breed they are supposed to have a 20 minute cool down till they can breed again. This does not seem to be the case within bedrock version, and I am unsure if its intended this way or not.

Also when something happens to effect village popularity for the negative, such as killing a villager, or iron golem its supposed to reset the cool down and add an additional 3 to 20 minutes to the breeding time, this also does not seem to be the case.

I had a some zombies kill off a few villagers while I was in the area, no matter the case this should have caused the villagers not to breed for anywhere between 3 and 23 minutes, but they instantly started breeding and within a minute the 3 lost villagers where replaced. 2 of the babies were produced by the same 2 villagers.